9. Radiant Silvergun
Release date: 1998
Treasure's most popular schmup is a classic, and if you're into the genre at all it's certain you've likely heard of it. Unlike many other similar games, it packs a memorable narrative with frutratingly difficult stages, and we love every single second. Chaining enemies and racking up bonuses are the key to victory here, especially since there are no power-ups available.